以粉煤灰为吸附材料,模拟含铅离子废水,探讨吸附时间、pH值、温度、投灰量、离子浓度5个因素对粉煤灰吸附重金属效率的影响;并设计五因素四水平的正交实验,经过均值分析和方差分析数据得出最佳水平组,结果表明:当离子质量浓度60 mg/L、吸附时间90 min、投灰量5.0 g、pH值6.0、温度20 ℃时吸附效果最好.单因素分析得出,当吸附时间90 min、pH值6.0、温度50 ℃、投灰量5.0 g、离子质量浓度30 mg/L时吸附效果相对较好,单因素方差分析也证明以上5种因子对粉煤灰吸附铅离子具有显著性差异.%The influences of time,pH value,temperature,ash dosage and ions concentration on Pb removal from simulated wastewater with fly ash as adsorbent were investigated.Through orthogonal experiment designed by five factors and four levels,and analysis of mean value and variance,the optimum conditions were obtained, i.e.,ions concentration 60 mg/L,time 90 min,ash dosage 5.0 g,pH value 6.0 and temperature 20 ℃.Re-sults of single factor analysis showed the adsorbing effect was relatively good inh the conditions of time 90 min, pH value 6.0,temperature 50℃,ash dosage 5.0 g and ions concentration 30 mg/L.Results of single factor va-riance analysis approved that these five factors had significant different effects on Pb removal by fly ash.
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